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KJ4UTS

  • one year ago

Find an equation of the line satisfying the conditions below. Describe your work. x-intercept = 5, and y-intercept = -2 Find the slope-intercept form of the line. Hint: These intercepts give you 2 points; a good way to start is to find the slope using these 2 points

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  1. pooja195
    • one year ago
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    y=mx+b b=y intercept m=slope

  2. KJ4UTS
    • one year ago
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    @pooja195 y=5+-2 im not sure what goes for y and how to find the slope?

  3. pooja195
    • one year ago
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    We need to graph it and get the slope using rise/run

  4. KJ4UTS
    • one year ago
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    so I just have to graph y=5+-2?

  5. pooja195
    • one year ago
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    No graph the intercepts

  6. pooja195
    • one year ago
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    |dw:1441992045141:dw|

  7. KJ4UTS
    • one year ago
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    so just graph (5, -2)?

  8. pooja195
    • one year ago
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    Not try finding the slope :)

  9. KJ4UTS
    • one year ago
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    Isn't it rising up 1over 1

  10. pooja195
    • one year ago
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    Start by rising up from the y axis....

  11. KJ4UTS
    • one year ago
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    the y axis is rising straight up? going up 1

  12. pooja195
    • one year ago
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    @triciaal can you please help?

  13. KJ4UTS
    • one year ago
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    x / 5 + y / -2 = 1 is this the equation ?

  14. pooja195
    • one year ago
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    No :/

  15. pooja195
    • one year ago
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    WAIT i got this! >:)

  16. pooja195
    • one year ago
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    |dw:1441993143603:dw|

  17. triciaal
    • one year ago
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    do you still need my input?

  18. pooja195
    • one year ago
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    Can you tell me if im doing this right or not?

  19. triciaal
    • one year ago
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    well give me a few minutes need to start at the top

  20. pooja195
    • one year ago
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    @KJ4UTS is this timed ?

  21. triciaal
    • one year ago
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    x-intercept = 5, and y-intercept = -2 points (5, 0) and (0, -2)

  22. triciaal
    • one year ago
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    slope m = change in y / change in x = y2 - y1/(x2- x1) for points (x1, y1 and (x2, y2)

  23. triciaal
    • one year ago
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    slope is the same for any 2 points on the line using this slope and one of the given points with any point (x, y) equation of the line in slope intercept form y = m x + b b is the y-intercept the value of y when x = 0

  24. triciaal
    • one year ago
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    what is the value for the slope?

  25. KJ4UTS
    • one year ago
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    2/5?

  26. triciaal
    • one year ago
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    |dw:1441993662201:dw|

  27. KJ4UTS
    • one year ago
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    oh I see sorry I forgot to add the -

  28. KJ4UTS
    • one year ago
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    would this be the equation y= -2/5 x - 2

  29. triciaal
    • one year ago
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    |dw:1441993751023:dw|

  30. triciaal
    • one year ago
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    |dw:1441993867203:dw|

  31. triciaal
    • one year ago
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    check your slope

  32. KJ4UTS
    • one year ago
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    I see so there is no - in front of the 2/5 The equation is just y=2/5 x - 2

  33. triciaal
    • one year ago
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    |dw:1441994046135:dw|

  34. triciaal
    • one year ago
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    do you understand why?

  35. triciaal
    • one year ago
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    the direction matters when moving from one point to the other

  36. triciaal
    • one year ago
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    |dw:1441994504313:dw|

  37. pooja195
    • one year ago
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    So i was doing it correctly...

  38. triciaal
    • one year ago
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    |dw:1441994648251:dw|

  39. KJ4UTS
    • one year ago
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    the -2/ -5 makes it positive

  40. triciaal
    • one year ago
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    my point is the direction

  41. triciaal
    • one year ago
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    correct

  42. pooja195
    • one year ago
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    Now finish off the problem y=mx+b b=y intercept m=slope

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